Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Miquel Raynal <miquel.raynal@bootlin.com>
To:     Piotr Sroka <piotrs@cadence.com>
Cc:     Miquel Raynal <miquel.raynal@bootlin.com>,
        Kate Stewart <kstewart@linuxfoundation.org>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        Boris Brezillon <bbrezillon@kernel.org>,
        Richard Weinberger <richard@nod.at>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, linux-kernel@vger.kernel.org,
        Marek Vasut <marek.vasut@gmail.com>,
        linux-mtd@lists.infradead.org,
        Frieder Schrempf <frieder.schrempf@kontron.de>,
        Thomas Gleixner <tglx@linutronix.de>,
        Brian Norris <computersforpeace@gmail.com>,
        David Woodhouse <dwmw2@infradead.org>
Subject: Re: [v2] mtd: rawnand: Change calculating of position page containing BBM
Date:   Fri,  4 Oct 2019 18:04:43 +0200
Message-Id: <20191004160443.6258-1-miquel.raynal@bootlin.com>
In-Reply-To: <20190924055439.4212-1-piotrs@cadence.com>
References: 
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Tue, 2019-09-24 at 05:54:31 UTC, Piotr Sroka wrote:
> Change calculating of position page containing BBM
> 
> If none of BBM flags are set then function nand_bbm_get_next_page 
> reports EINVAL. It causes that BBM is not read at all during scanning
> factory bad blocks. The result is that the BBT table is build without 
> checking factory BBM at all. For Micron flash memories none of these 
> flags are set if page size is different than 2048 bytes.
> 
> Address this regression by:
> - adding NAND_BBM_FIRSTPAGE chip flag without any condition. It solves
>   issue only for Micron devices.
> - changing the nand_bbm_get_next_page_function. It will return 0 
>   if no of BBM flag is set and page parameter is 0. After that modification
>   way of discovering factory bad blocks will work similar as in kernel 
>   version 5.1.
> 
> Cc: stable@vger.kernel.org
> Fixes: f90da7818b14 (mtd: rawnand: Support bad block markers in first, second or last page)
> Signed-off-by: Piotr Sroka <piotrs@cadence.com>
> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.

Miquel